The purpose of an I/O memory management unit is to facilitate access to main memory for peripherals. peripherals) - and it has to cooperate with the main system memory management unit in order to, well, manage memory. The DART is really an memory management unit specifically for I/O (i.e. My guess given that it is a generic problem and not confined to SoftRAID that this problem is/was in macOS as part of the DART system, since the macOS update fixes it. The odds do not seem good for Apple being on the ball enough to fix that issue on an architecture now abandoned. my 2019 Mac Pro tends to kernel panic twice a week sometimes more-which it never used to do-all part of the “upgrades” of recent years. Hence the “works for me” non-sequitur of the uninformed. Like trying to detect neutrinos in the neighborhood swimming pool.Ĭertain types of software bugs can devilishly difficult to track down. MPG: imagine the consternation and frustration of the SoftRAID developers trying to reproduce, let alone diagnose and fix such an elusive problem-particularly when the issue lies in the most remove areas of the OS. We want to thank Apple for their cooperation in getting this bug sorted and, as always, thank you to all our awesome SoftRAID users for your patience. If you want more information on the latest release of SoftRAID, click here. SoftRAID gives you increased power and control over your RAID drives and disks that hardware RAID can’t deliver, and it doesn’t lock you into technology that you can’t upgrade or expand. SoftRAID 7.5 was released earlier this year with a host of improvements, including much easier setup. So, if you're a SoftRAID user who depends on a RAID 5 configuration, go ahead and update to the macOS 13.4 for the best experience. With the release of macOS 13.4 Macs with Apple silicon are as reliable as Intel Macs when accessing SoftRAID RAID 5 volumes. After many, many months of working with Apple, there is finally a fix which has been introduced with the release of macOS 13.4. We then notified Apple engineers of the bug and helped them investigate it. We determined that this bug was in the code which transfers data to and from disks when accessing files on SoftRAID volumes. Most SoftRAID users on Macs with Apple silicon never see this problem. This bug happens so infrequently that it took our testers more than a year to figure out a way of reproducing it. Reading or writing the same file to the same volume on an Intel Mac never fails. This transition introduced a bug which very occasionally causes a kernel panic when reading or writing files to SoftRAID RAID 5 volumes on Macs with Apple silicon. This was the case with the transition to Macs with Apple silicon. Sometimes, the change in CPU type also introduces bugs. With each of these changes, not only are the instructions used by the CPUs totally different, but the mechanism used to access main memory has changed as well. Here are the details.Īpple has changed the CPU used in Mac computers many times in the past 30 years first from Motorola to Power PC, then from Power PC to Intel, and most recently from Intel to Apple silicon.Įach time, the macOS development team has done incredible work of hiding the fact that macOS software, your applications, and all of your files are running on a completely different type of processor. Today, Apple released macOS 13.4 and along with it a long-awaited fix for an issue that some SoftRAID users have been experiencing with RAID 5 volumes. By Tim Standing, lead SoftRAID developer. macOS 13.4 Brings Bug Fix for Some SoftRAID Users Happily, I have no need for SoftRAID on that machine. * I am loathe to move from macOS Monterey to macOS Ventura on my 2021 MacBook Pro M1 Max given capricious user interface changes, and broken features in Terminal.app. And a wonder that it existed (in macOS) for 4-5 years.Īpple Silicon Mac users using SoftRAID should upgrade macOS Ventura*. SEND FEEDBACK Related: Apple, Apple Core Rot, Apple macOS, Apple macOS Ventura, Apple Silicon, kernel panic, memory, RAID, RAID-5, SoftRAID Your driver is up to date - if you have a problem with your driver, you can try to re-install the old version as below. Silicon Image SiI 3132 SoftRaid 5 Controller *: 2K=Windows 2000, 2K3= Windows 2003, XP= Windows XP, VISTA = Windows Vista, WIN7 = Windows 7 Watch this video to see how it works - click here If your driver isn't working, use the driver having the same OEM with the your laptop/desktop brand name. If you are looking for an update, pickup the latest one. With the different devices, they can have the same driver, it's because they all use the same chip manufacturer. Below is a list of drivers that may be suitable for your device.
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